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相关概念视频

Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

34
A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
34
Multiple Sclerosis l: Introduction01:19

Multiple Sclerosis l: Introduction

31
Multiple sclerosis is a chronic autoimmune disease of the central nervous system (CNS) that affects the brain, spinal cord, and optic nerves. It is an inflammatory demyelinating disorder and a leading cause of neurological disability in young adults.EpidemiologyMS commonly begins between 20 and 40 years of age and is twice as common in women. Its exact cause remains unclear, but genetic susceptibility contributes, with higher risk in first-degree relatives and identical twins. A greater...
31
Traumatic Brain Injury l: Introduction01:28

Traumatic Brain Injury l: Introduction

37
DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...
37
Spinal Cord Injury ll: Pathophysiology01:14

Spinal Cord Injury ll: Pathophysiology

43
Spinal cord injury progresses through two interconnected phases: primary injury and secondary injury.Primary InjuryPrimary injury happens at the moment of trauma and involves immediate mechanical damage to the spinal cord.Compression happens when broken vertebrae, herniated discs, or accumulating blood (such as a hematoma) press directly against the spinal cord, distorting its normal shape and function. In cases of contusion, the cord is bruised by a blunt force (like penetrating injuries or...
43
Secondary Spinal Cord Injury llI: Pathophysiology01:25

Secondary Spinal Cord Injury llI: Pathophysiology

68
Early Ischemia and Ionic ImbalanceWithin minutes of spinal cord injury, a secondary cascade begins, progressing over hours to weeks. Vascular damage reduces blood flow, causing ischemia and mitochondrial dysfunction. ATP depletion leads to ion pump failure, membrane depolarization, sodium influx, potassium efflux, and water accumulation, resulting in cellular swelling. Increased intracellular calcium further disrupts mitochondria and accelerates cellular injury.Excitotoxicity and Neuronal...
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相关实验视频

Updated: May 5, 2026

Advanced Diffusion Imaging in The Hippocampus of Rats with Mild Traumatic Brain Injury
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延迟发作的扩散轴突损伤的病例报告

Sonu Adhikari1, Rupesh Raut1, Dinuj Shrestha1

  • 1Department of Neurosurgery, Patan Academy of Health Science, Lalitpur, Nepal.

Annals of medicine and surgery (2012)
|August 25, 2025
PubMed
概括
此摘要是机器生成的。

这份病例报告强调了一个罕见的延迟扩散轴突损伤 (DAI) 在一个年轻的男性头部创伤后. 患者经历了延迟昏迷, 这强调了诊断DAI时需要临床怀疑.

关键词:
病例报告发病时间延迟扩散的轴突损伤

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Last Updated: May 5, 2026

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科学领域:

  • 神经科学
  • 创伤性脑损伤研究
  • 医疗病例报告

背景情况:

  • 扩散轴突损伤 (DAI) 是创伤性脑损伤 (TBI) 的严重后果,通常会导致立即和长时间的意识丧失.
  • DAI的分类是基于昏迷的持续时间,损伤的严重程度以及脑损伤的放射性或组织学证据.

研究的目的:

  • 报告一个独特的延迟发作的扩散轴突损伤 (DAI) 后从摇摆跌落.
  • 为了说明在临床实践中考虑DAI异常呈现的重要性.

主要方法:

  • 一个20岁的头部创伤的男性的案例研究.
  • 记录了临床表现,格拉斯哥昏迷量表 (GCS) 的波动,以及暗示三级DAI的MRI发现.
  • 在延迟输管后,患者的治疗包括保守治疗.

主要成果:

  • 患者呈现出波动的GCS得分和MRI发现与三级DAI一致.
  • 在入院50小时后, 患者出现昏迷,
  • 在输管后开始进行保守治疗.

结论:

  • 虽然不常见,但DAI的延迟可能会导致严重的残疾,创伤后昏迷或持续的植物状态.
  • 高临床怀疑指数对于诊断DAI至关重要,特别是当患者表现比最初的CT扫描更严重时.
  • 识别非典型的DAI表现有助于及时诊断和适当的患者治疗.